Konstantine Gus Kladakis, a 45-year-old self-employed businessman, was last seen on March 28, 1984, at the Marina Jack fishing docks in Sarasota County, Florida. He planned to travel to Toronto, Ontario, that day but never arrived at the airport and there are no records showing he reached his destination.

Kladakis was described as a white male with brown hair and brown eyes, 6 feet 0 inches tall and weighing 210 pounds. There has been no activity on any of his credit cards since his disappearance. Investigators have called the case an endangered missing person investigation and suspect foul play, but the case remains unsolved and few details have emerged.

If anyone was at Marina Jack on March 28, 1984, or remembers seeing Kladakis before he disappeared, the Sarasota County Sheriff’s Office would like to hear from you.